If animation is reversed it should start from last frame.

Author: gotenxds

src/animation/Animation.js

@@ -201,7 +201,7 @@ Phaser.Animation.prototype = {
         this._timeLastFrame = this.game.time.time;
         this._timeNextFrame = this.game.time.time + this.delay;
 
-        this._frameIndex = 0;
+        this._frameIndex = this.isReversed ? this._frames.length - 1 : 0;
         this.updateCurrentFrame(false, true);
 
         this._parent.events.onAnimationStart$dispatch(this._parent, this);